Ron,
Church's are great. Show up ready to go, talk to the property maintenance guy and tell him you are there to clean the entranceway, mold and mildew, or whatever you find. They will tell you they didn't have any idea that you were called to do that. Just tell them you noticed it was bad and there won't be any charge, you just want to help out.
Show them your insurance and all that jazz. They will give you the go-ahead. And the word will spread fast.
Worked for me at our church.
Craig
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Craig Knight
www.powerwashunlimited.com